Starter and ignition control.



J. B. ENTZ.

STARTER AND IGNITION CONTROL.

APPLICATION FILED JAN.18,1913.

l ,084, 9 3 l Pateted Jan. 20, 1914.

zine/5,666 71?/ RO vno UNITED STATES PATENT OFFICE.

JUSTUS B. ENTZ, 0F CLEVELAND, OHIOfASSIGNOR TO -THE WHITE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

STARTER AND IGNITION CONTROL.

Specification of Letters Patent.

Patented Jan. 20, 1914.

Application filed January 18, 1913. i Serial No. 742,760.

Cleve-land, in the county of Cuyahoga and State of Ohio, have invented a certain new and 'useful Im ro/vement in Starter and `Ignition Contro of which the following is a full, clear, exact description.

This invent.' relates to starter and igmtlon controlling mechanism for internal combustion engines and has particular utility in connection ,with the starting and lighting syst-ents of motor vehicles employing dynamo electric machines for starting and lighting or battery charging purposes.

In one ot its aspects the invention comprises an arrangement of starter and ignition controlling switching mechanism, or combination of starter and ignition switches such that there is eliminated the possibility of premature ignition 1n a cylinder by the manipulation of the ignition switch while the engine is being turned over by the starter, and so that there will likewise be precluded the possibility of stopping the enoy the ignition switch without disconnecting the battery and dynamo motor.

Another novel feature ot my invention rcsides in the controlling switch for a` dynamo motor ot the type having series and shunt field windings, which assist cach other and provide a. strong field and good starting torque when the dynamo electric machine serving. as a motor lo turn over the engine, and which have an opposing and voltage regulating action when the machine is serving as ay generator. ln this aspect, my invention includes a. starter switch which connects and disconnects the battery a id armature of the dynamo motor. and also connects and disconnects the shunt field winding. 'the shunt field winding being disconnected (on the opening ot.' the starter switch), not later than and preterably .beforey the arn'iature and' battery are disconnected, so as to pre clude the possibility of the arn'iature and luittery Abeing disconnected without' also tln` discomncting of the shunt field winding from both the armature and battery.

My invention may be briefly summarized as consisting in certain novel combinations and arrangements of parts which will be described in the specification and set forth in the appended claims.

My invention is of utility as far as the' ig .crank sha tt.

nition part of the system is concerned when either a magneto or a battery is used as a source of igniting current, and in the drawings, Figure l is a diagrammatic view of a starting, lighting and ignition system embodying my invention and employing a magneto as the source of ignition current;

and Fig. 2 is a similar view wherein the battery is used as a source of ignition current.

Referring now to the drawing, it will be seen thatthe starter and lighting system in cludes a. d ynamo electric machine 10, havingl an' armature 10, a main shunt tield winding l0, and an auxiliary series field winding 10C. The armature is preferably coupled or geared to the .ngine by a single power transmission agency which with suitable speed reduction at all times connects the dynamo electric machine to the engine and iS in sorvice when the dynamo electric machine is serving both as a motor and as a generator. I have not deemed it necessary to show this power transmitting means, but it is believed to be sufficient-to state that a simple chain and sprtuiliety drive between the dynamo electric machine and pump shaft will suilice.

.It desired, of course, the dynamo electric machine mightbe coupled directly to the lVhcn the dynamo electric machine is serving as a motor, itreceives current from the storage battery ll. and at such time. the two tield windings 10h, l0c assist each other so as to produce maximum iield strength and provide large torque for startingpurposes. lVhen the dyitamo electric machine is driven as a generator, the direction of current, through the series tield winding reverses. and the latter then serves asV a bach series winding. so that the licld produccd by the current iu the seriesI winding opposes that produced by the currentI in the Ishunt field winding, and as the opposingr action varies with the speed and consequently with the value ot' the current in the series winding, the dynamo electric machine serves as a sulistantialll".Y constant potential generator. and the battery is cl'iargcd at a substantially constant'ampere rate.,

The lamps ot the lighting circuit are shown at l2. These lamps arc connected by suitable conductors lf3 to the conductors 14, connecting the battery and dynamo electric machine.

In Fig. l, the source of ignition current a magneto 15, only a conventional showing` of which is made. The magneto may, of course, he ot' any suitable constructioi'i, such as a high tension magneto whose primary may he short circuited, as hereinatter explained, to cnt the magneto into and out of service, and whose secondary is connected in the usual manner to a distributer lti haringcontacts connected to the several lspark plugs ot a multiple cylinder engine. rlho primary circuit. is adapted 'to be closed and opened in the usual manner hy a make and break device or interrupter l5". F or the control of the dynamo motor and for the ignition control, employ two mechanically connected switches including` a starter eii'itch t7 and an igrnition Iswitch l# ii'hose .-aritch bladesI are mechanically connected together so that the two switchen together constitute in etlect. unitary switching' mechanism. rlhe Starter controllingiv switch li" serres to connect and disconnect the batteri and dynamo electric machine and also to connect and disconnect the shunt field winding ot the dynamo electric machine7 and the ignition switch is utilized, in this case, to out in or ont the ignitioi'i by short circuiti ne the magneto or opening' the short circuit. Cine terminal otA the series winding` LOC is connected to the blade ot switch l?. which is adapted to engage two .separate contacts or points 1'7" and 17h, the 'former ot which is connected to one terminal of the shunt windiep 1G, and the latter ot' which is connected to one terminal ot' the armature ttl". .ln

cordance with one part ot my present invention, the contact 17 is made shorter than the Contact 17" so that when the starter .switch is opened. the circuit ot the. shunt tield winding opened prior to the opening;` ot' the circuit l'ietiif'een the battery and tac armature. ly b Hiking; the circuit ot the shunt field winding' prior to the time that the battery and dynamo electric machine are disconnected. there is; inecluded the possibility oi" the armature and batteri bein;l dis connected without also the discoi'inecting ot the shunty iicld winding` from both the armature and hattciw'. Consequently, there is eliminated the liability ot' the battery di.sclniriing` through the shunt tield winding'. as mieht occur il the shunt field wi udine; were not disctainected troni the battery, when the armatiire-bat1tery circuit ia opened. and 'there l is also eliminated the liability ot' the roltage of the dynamo electric machine bnildine; up to a dangerous point` as might occur it the machine were rui. on open circuit with the, shunt field winding connected acrossl the terminals of the machine. The two l@witches4 17 and 18 are so arranged and interconnectu i ed that wien the starter Switch is closed. i

the ignition switch is opened so that the ma r it to the entfinc. and when the ionition to cnt out the magri starter switch must, he opened. I prefer to employ a switch with progressive positions, which include the position marked a--a in Fie: 't of the draii'ings. wherein the starter awitcl. is closed, and the ignition switch is openeih the position marked -b wherein the starter switch is full open and the igni tion switch is closed, and the position marked tif-c which is an iiitermediate position with both switches open.

The advantages ot the ahoie described arrangement include the tollowing: It is impossible tor iiiremature ignition to he caused in the cylinder by the manipulation ol the ignition switch while the engine is being turned orer by the starter. There is no liability ol the operator stopping the engine hy closing the ignition switch without also opening' tlic starter switch so as to dieconnect the battery and dynamo electric machine. aa ii ell as the yshunt. tield winding troni both the battery and armature ot the dynamo electric machine. The intermediate position c--c enables the dynamo electric machine to be cut out of service without a tl'ectinct the operation ot the engine, z'. c., without stopping the engine. Furthermore, the apparatm r has the preyious'ly mentioned atlvantages resulting troni the tact that the Vdinnt tleld windingy is disconnected on the opening' ot thcl Switcln not later than the opening` ol the battery and armature circuit.

ln Fie". 2 l' have shown a slight modification. as tar as the ignition part ofthe systein conccrnci'l. but wherein the .same advvantanes deeci'ibed in connection with Fig. l are attained. lin this instance` the dynamo electric machine and the battery connections are the sa me in all respects as those shown in Fie, 'l5 lloweier. inatead oi employing a magneto t'or ignition purposes. the storage battery Il i@ used as a source ol.E ignition cul'- reni. .i primary ignition circuit: Oineludes the primari' ot an induction coil .lyhavingy a Secondary connected to the dietrihuter, The primary circuit includes a suitable make and break device a cam operated A circuit breaker being' here shown. `For the Control ole the vstarter and ignition.v l employ a pair ot intcrconnectcd switches` here deie'natcd i and 2l. 'llie .switch )Zi is connected to the battery and dynamo electric machine termin; ls precisely in the saine manner as shown in Fie. l. Vl `he .switch l-l. however` is included directly in the priniary ignition circuit 20. rlhiblades ot" these two switchesl l Y f are so connected together and arranged with respect to the switch contacts` that when the starter switch is closed. the ignition switch is likewise closed. -lor starting and normal engine operation. the switchea then being)T in the position marked (1 -(Z. When the starter lwitch ie lnll open. the ignition switch iS l open. the .switchea4 then heine' in the posithc tion marked che. lilllien the switches are l it t) in intermediate position f-f, however, the starter switch is open, but the ignition switch is still closed, thus allowing the engine to be operated .with the starting and bustion engine, a dynamo electric machinel adapted to start the engine and adapted t bc driven thereby when the engine is started,-

a storage battery, Lan ignition circuit for the engine, and unitary starter and ignition controlling switch mechanism having progressive positions including respectively a position wherein the dynamo electric machine and battery are connected into circuit, and the ignition circuit is operative, a position wherein the dynamo electric machine and vignition circuit are both cutout of service, and a third position wherein the dynamo electric machine.. is cut out of service at said switching mechanism, and wherein the ignitio'n circuit is operative. 2. In combination with an internal conibustion engine, a dynamo electric machine adapted to start the engine and to bc driven thereby when the engine is started, a starter switch for connecting and disconnecting the dynamo electric machine and battery, an ignition circuit, an ignition switch, said starter switch being connected to the ignition switch in a manner such that `when the starter switch is closed, the battery and dynamo electric machine are connected into circuit, and the ignition switch is in position to render the ignition circuit operative, when the starter switch is full open, the ignition switch renders the ignition circuit inoperative, and the dynamo electric ma chine and battery are disconnected at said switch, and when the starter switch is in an intermediate open position, the ignition switch renders the ignition circuit operative.

and the dynamo electric machine and battery are disconnected at said starter switch.

3. ln combination with an internal combustion engine` a dynamo electric machine for engine starting and lighting or battery7 charging purposes, a storage battery, said dynamo electric machine including an armature, a shunt field winding, and a series tield winding adapted to produce fields which assist each other while the dynamo electric machine is .serving as a motor, and oppose i each other-when the dynamo electric machine is serving as a generator, and a starter switch tor connecting and disconnecting the battery and armature of the dynamo electric machine, and for connect-ing and disconnect` lighting apparatus cult` out of service. lt i ing the shunt field winding, said switch disconnecting the shunt. eld winding prior to disconnecting the battery and armature.

el. ln combination with an internal combustion engine, a dynamo electric machine for engine starting and lighting or battery chargingpurposes, said dynamo electric machine having an armature, a shunt field winding and a series field winding adapted to produce fields which assist each other when the dynamo electric machine is serving as a motor, and which oppose each other when the dynamo electric machine is servingas a generator, a storage battery, an ignition circuit, and unitary 30 switching mechanism for connecting and disconnecting the battery, armature and shunt eld winding of the dynamo electric machine and for controilingthe ignition circuit. said switching mechanism disconnecting the shunt tield winding from the battery and armature prior to disconnecting the battery and armature.

5. In combination with an internal combustion engine, a dynamo ,electric machine -for engine starting and lighting or battery charging purposes, said dynamo electric machine having an armature, a shunt field winding and aseries field winding adapted to produce fields which assist each other when the dynamo electric machine is serving as a motor and which oppose each other when the dynamo electric machine is servingr as a generator, a storage battery, anignition circuit., and unitary switching mechanism for connecting and disconnecting the battery, armature and shunt field winding of the dynamo electric, machinecand for controlling the ignition circuit, said switching mechanism having progressive positions in- )L05 cluding respectively a position whereinl the dynamoelectric machine and battery are connected into circuit and the ignition circuit is operative, a second positionv wherein ,l the dynamo clectric machine is cut outv of lll) service, and the ignition circuit is'operative, and a third position wherein the dynamo electric machine and ignition circuit are. both cut out ot service. g

6. In combination with an internal combustion engine, a dynamo electric machine for engine starting and lighting or battery charging purposes, said dynamo electric machine having au armature, a Vshunt Field winding` and ay series field winding adapted to produce fields which assist each other when the dynamo'electric machine is serving as a motor, and which oppose each other when the dynamo electric machine is serving as a generator, a storage battery, an ignition 1 25 circuit, and unitary switching mechanism for connecting and disconnecting the battery, armature and-shunt field Winding of the dynamo electric. machine and for controlling the ignition circuit, said switching mechanism dswnum', winding 'from H1@ hat prim' to disconncciii 1113111115 :md smid sufl ing pl'agw@ sitifms 10 tru' rmwhim is mi om l ,1, Jv Silllifb 

